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A : Esters on reduction with LiAlH(4) fo...

A : Esters on reduction with `LiAlH_(4)` forms alcohols.
R : Esters having at least two `alpha`-Hydrogen atoms undergo Claisen condensation.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).

C

If Assertion is true statement but Reason is false, then mark (3).

D

If both Assertion and Reason are false statements, then mark (4).

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements given in the question, we need to evaluate both Assertion (A) and Reason (R) separately. ### Step 1: Evaluate Assertion (A) The assertion states that "Esters on reduction with LiAlH₄ form alcohols." - **Explanation**: Lithium aluminum hydride (LiAlH₄) is a strong reducing agent. When esters are treated with LiAlH₄, they undergo reduction to form alcohols. The carbonyl group (C=O) in the ester is reduced to a hydroxyl group (–OH), resulting in the formation of an alcohol. ### Step 2: Evaluate Reason (R) The reason states that "Esters having at least two alpha-Hydrogen atoms undergo Claisen condensation." - **Explanation**: Claisen condensation is a reaction between esters in the presence of a strong base, leading to the formation of β-keto esters or β-diketones. For the Claisen condensation to occur, the ester must have at least two alpha-hydrogen atoms. This is because the base abstracts one of the alpha-hydrogens, generating an enolate ion, which then attacks the carbonyl carbon of another ester molecule. ### Step 3: Determine the Relationship Between Assertion and Reason Now, we need to assess whether the reason provided correctly explains the assertion. - **Analysis**: Both statements are true. However, the reason does not directly explain the assertion. The assertion is about the reduction of esters to alcohols, while the reason discusses the Claisen condensation, which is a different reaction involving esters. ### Conclusion - Both Assertion (A) and Reason (R) are true, but the Reason (R) is not the correct explanation of the Assertion (A). ### Final Answer The correct answer is that both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion. ---
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